using System;

using System.Net;

using System.Text.RegularExpressions;

​

public class Program

{

    public static void Main()

    {

        //---------------- Start QuickStream Token script ----------------       

        ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls | SecurityProtocolType.Tls11 | SecurityProtocolType.Tls12 | SecurityProtocolType.Ssl3;

        var request = (HttpWebRequest)WebRequest.Create("https://api.quickstream.support.qvalent.com/rest/v1/single-use-tokens");

        request.Headers.Add("Authorization", "Basic " + System.Convert.ToBase64String(System.Text.Encoding.GetEncoding("ISO-8859-1").GetBytes("SLSF_PUB_bja8w4rxfdqumgbydg2ke4c9ex65tud3w6mksrg9suijmw6f29vhsx3fddur")));

        // Construct request JSON. Note that expiryDateYear will stop working in the year 2100

        var postData = @"{

                ""supplierBusinessCode"": ""LOTTERY1QG"",

                ""accountType"": ""CREDIT_CARD"",

                ""cardholderName"": ""Sylvia"",

                ""cardNumber"": ""1234123412341234"",

                ""expiryDateMonth"": ""12"",

                ""expiryDateYear"": ""2022"" }";

        var data = System.Text.Encoding.ASCII.GetBytes(postData);

        request.Method = "POST";

        request.ContentType = "application/json";

        request.ContentLength = data.Length;

        using (var stream = request.GetRequestStream())

        {

            stream.Write(data, 0, data.Length);

        }

        try

        {   //Get singleUseTokenId from response

            var response = (HttpWebResponse)request.GetResponse();

            var responseString = new System.IO.StreamReader(response.GetResponseStream()).ReadToEnd();

            string TokenCustomerID = Regex.Split(Regex.Split(responseString, "\"singleUseTokenId\":\"")[1], "\",")[0];

            //Write resulting token to Token field

            Console.WriteLine("Token: " + TokenCustomerID);

        }

        catch (WebException ex)

        {   //Clear token, provide message returned from QuickStream

            var responseString = new System.IO.StreamReader(ex.Response.GetResponseStream()).ReadToEnd();

            //Get first error message from response

            string errString = Regex.Split(Regex.Split(responseString, "\"messages\":")[1], ",")[0];

            Console.WriteLine("QuickStream returned error: " + errString);

        }       

        //---------------- End QuickStream Token script ------------------   

    }

}